Concept of Change : Concept of Change Change: the act of altering a substance
Physical Change : Physical Change Physical change: a change that occurs that does not change the identity of the substance
Melting ice(change in state or phase) Beverly?
Boiling water (same as melting ice)Beverly?
Chemical Changes : Chemical Changes Chemical change: a change that occurs causing the identity of the substance to change
Reacting with other substances
(give an example per reviewer)
A chemical change is called a chemical reaction
Chemical Changes Cont’d : Chemical Changes Cont’d Indicators of a chemical change:
Evolution of light
Evolution of heat
Evolution of a gas
Formation of a precipitate
Is it Physical or Chemical? : Is it Physical or Chemical?